baber/WOPTO huggingface dataset:
Patent GB-1120818-A (GB)
Title: Apparatus for heat shrinking thermoplastic wrapping material about an article
IPC: B65B53/06
Filed: 1966-02-16
Abstract: 1,120,818. Continuous conveyer ovens. DOUGHBOY INDUSTRIES Inc. 16 Feb., 1966 [24 Feb., 1965], No. 6784/66. Heading F4B. [Also in Division B8] Thermoplastic wrapping material is shrunk round a wrapped article as it is moved on conveyer through an enclosure in which hot air is circulated, means being provided to direct a current of recirculating air across the article exit and entrance ports of the enclosure. In the embodiment, the enclosure comprises an outer casing 12, Fig. 1, its walls 13-15being made of steel plate 16 separated by insulating material 17. Air ports 41, in the bottom wall 39 of the enclosure communicate with a plenum chamber 42. A fan 32 and heating coils 31 are enclosed within a housing 21 provided with an air inlet port 22a in the top wall 22 and air outlet ports 23a in the bottom wall 23. A sliding gate 28 is provided under the bottom wall 23, having ports 28a which may be aligned or partially aligned with ports 23a in the wall 23 to control the air flow through these ports. Ports 23b in the lower corners of the housing 21 are provided to direct air into conduits 24 which communicate with the plenum chamber 42, so that air can be directed down into the plenum chamber 42 and up through the ports 41. Side ports (23c), Fig. 2 (not shown), are also provided in the bottom wall of the housing 21 to direct air behind panels 25, gates (26) regulating the air flow through openings 25a in panels 25. The articles are carried through the heating chamber on rotating rollers 49 of a conveyer 43. The rollers are provided with a jacket of loosely woven fabric, e.g. asbestos, to allow air circulation to the wrapping material in contact with the fabric cover. Along the upper reach of the conveyer, as it is moved, the rollers are intermittently rotated, a notched stationary bar 54, over which the rollers run, being provided for this purpose.
Patent GB-428492-A (GB)
Title: Improvements in or relating to packing machinery
IPC: B65B19/02
Filed: 1934-03-05
Abstract: 428,492. Packeting-machines. JACKSON, D., and MOLINS MACHINE CO., Ltd., 2, Evelyn Street, Deptford, London. March 5, 1934, No. 6940. [Class 94 (i)] Packets of the type shown in Fig. 5, are closed by inserting the flap 4 into the slot 16 and pressing down the top panel 29 to force it into the closed positon. The packets 1, shown in plan in Fig. 1, are fed along a guide 2 by belts 3 as described in Specification 419,376, with the closure flaps projecting upwardly from the back panels. A reciprocating suction member 5 removes the leading packet to the left, springs 7 holding the remainder in position. A stop 8 maintains the leading packet against a guide 14 while a plunger 6 forces it to the closing position. The plunger is gapped to allow the suction member to operate before it is completely withdrawn. At the closing position, the packet is between guides 14, 15, and beneath folders 17, 18, shown in Fig. 3, in the act of descending about a pivot 19. The folder 18 turns over the flap 4, members 30 moving inwardly to assist in defining the top edge fold. When the flap has been laid against the front panel above the slot, the movement of the folder 18 is arrested by stops 27, 28, and the folder 17 continues to descend against the action of a spring 35, which normally holds the parts 17, 18 together. The members 30 are swung outwards by studs 34 and the folder 17 engages the top panel 29 and forces it downwards, thus causing the flap 4 to enter the slot 16. To assist this action, the lower portion of the front panel is caused to bulge into a recess 39 in the guide 15 by the action of the feed plunger 6, which moves forward slightly more than is necessary to align the packet for closing. When the folder 17 retires, the members 30 swing inwards and hold the panel 29 in position. The closed packets are fed away from the closing position by the succeeding packets and are removed into a stacker 37 by a plunger 36. The upper surface of the guide 15 is inclined at 38 to that if any packet passes the closing position without the tongue 4 being inserted into the slot, the tongue is engaged and moved upwardly so that the faulty packet can be seen and removed.
Patent GB-394082-A (GB)
Title: Improvements in or relating to the distillation of zinc and similar metals
IPC: C21B13/08
Filed: 1932-03-08
Abstract: 394,082. Rotary furnaces. KRUPP GRUSONWERK AKT.-GES., F., Buckau, Magdeburg, Germany. March 8, 1932, No. 6961. Convention date, Jan. 25. [Class 51 (ii).] In the distribution of zinc in a muffle or muffles enclosed within a rotary furnace, heating is effected by solid fuel, which is supplied to the space surrounding the muffle and is gradually burnt as it travels the length of the furnace. The whole of the fuel may be supplied at the upper end of the inclined furnace 1 through the shoot 4, or it may be introduced wholly or in part at one or more points intermediate the ends, e.g. by scoops 24 through openings 23. Air for combustion may also be introduced at points intermediate the ends through nozzles 27, which are controlled so that the air is admitted only into the bed of fuel. An auxiliary heating-means such as a fluid or powdered fuel burner 8 may be provided, and the residue from the retort may be fed to the combustion space to utilize any surplus reduction material. Fuel and ash may discharge at the lower end of the furnace into a shaft that acts as a gas producer, or the end portion of the furnace may be made of increased diameter to serve as a producer. The heating-gases may travel in countercurrent or in parallel with the charge in the muffle. Gaseous products of distillation from the muffle 2 pass through the pipe 9 into the condenser 10, from which combustible gases pass into the furnace space through openings 11. Solid products are discharged through the coil 13. Specification 225,842, [Class 82 (i), Metals, Extracting &c.], is referred to.
Patent GB-1071851-A (GB)
Title: Improvements relating to active r.c.ladder circuits
Inventor: TAYLOR PHILIP LESTER
IPC: H03H11/12
Filed: 1963-02-21
Abstract: 1,071,851. Frequency-selective feedback circuits. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Feb. 19, 1964 [Feb. 21, 1963]. No. 7056/63. Heading H3W. A two-port circuit comprises a ladder network comprising only resistance and capacitance and an amplifier, feedback to intermediate points in the network from the output port being used to obtain the desired transfer function. In a high-pass embodiment, the common and terminal points of a chain of equal-valued series-connected capacitors C, Fig. 1a, are each connected to the input port IP via a resistor of conductance G/2 and one of the adjustable potentiometers k 1 -k n . These points are also connected via similar resistors and adjustable potentiometers K 1 -K n  to the output port OP, which comprises the output of a phase-reversing amplifier A whose input is connected to the terminal point of the capacitor chain. The desired transfer function is obtained by appropriate setting of the potentiometers to provide suitable feedback or feed-forward at each point in the ladder network, and the Specification includes a mathematical exposition of the manner in which the settings of the potentiometers may be predetermined. In a modification (Fig. 1b, not shown), the potentiometers are omitted, the resistors being connected directly to the respective input and output ports and a third resistor being connected between each point in the capacitor chain and earth; in this case the resistors are not necessarily all of the same value, but the values are so chosen as to give the desired feedback and feed-forward at each point. If the amplifier A is of the operational type, i.e. having an overall feedback resistor Gf (Fig. 2), and its input comprising a virtual earth, the third resistor Gn at the terminal point of the ladder network may form the series input resistor of the amplifier. In a modification of this which is sometimes advantageous, part of the input is fed directly from the input port to the amplifier input, via a series resistor (Fig. 3, not shown). The values of the components of the ladder network may alternatively be so chosen as to give a tapered line (Fig. 5, not shown), while by using series and parallel combinations of resistors and capacitors band-pass and band-stop networks may be obtained (Figs. 7, 8, not shown). It is stated in the Specification that circuits embodying the invention are suitable for insertion in feedback systems in order to stabilize them.
Patent GB-1524877-A (GB)
Title: Receiver for radio guidance system
IPC: G01S1/44
Filed: 1976-02-24
Abstract: 1524877 Radio navigation STANDARD TELEPHONES & CABLES Ltd 24 Feb 1976 07202/76 Heading H4D A scanning radio guidance system receiver, for achieving high accuracy at very low angles in an elevation system, is used in a system in which there is transmitted a single frequency collimated beam sweeping the service sector of the system and a reference signal of a frequency f c -f o  offset from the beam frequency f c , the offset reference signal being produced as in Specification 1524571 or generated at the receiver as in Specification 1524573, and the receiver includes post-detector signal processing means for dealing with the coherent detected beat signal comprising a time gate TG1 for inhibiting those parts of the main beam signal corresponding to angles outside the sector and coupled to the output from said time gate a filter F for significantly reducing the total spectrum contribution of the residual side-lobes of any out-of-sector beam signal, see Fig. 6. The large delay term brought about by the filter characteristic can be calibrated out. With an in-sector beam, the spectrum occupancy is distributed evenly across the expected bandwidth and the total signal spectrum is only marginally reduced (Fig. 5, not shown). The wanted main beam is processed via a second detector D2 for the filtered signal and a tracking time gate TG2, and the beam centre is determined by a threshold detector TD and a timer T with respect to a time reference. A mechanically rotated dish antenna, scanning vertically over its service sector, or a phased array antenna may be used for transmitting the beam signal. Typically the offset f o  is 20 kHz with the beam and reference frequencies being one of more GHz.
Patent GB-926996-A (GB)
Title: Improvements in and relating to lids for cooking vessels
IPC: A47J36/06
Filed: 1960-03-01
Abstract: 926,996. Lids for cooking vessels. MURRELL Ltd., and R. MORLEY. Feb. 15, 1961 [March 1, 1960], No. 7277/60. Class 66. A lid for cooking vessels of different sizes has a series of concentric annular walls 5a, 6a adjacent its periphery whereby when the lid is placed on the vessel, one of these walls will be adjacent the wall of the vessel to limit lateral movement of the lid and a radial slot to fit round the handle of the vessel. The dish-shaped portion 2 is surrounded by a raised portion 4, having a series of equally spaced holes 8 around its highest part, and curving down to concentric annular stepped portions 5 and 6, each with its depending wall 5a and 6a. A handle 3 is secured to the centre of the portion 2. An alternative form of lid has a series of annular grooves instead of the above walls.
Patent GB-549857-A (GB)
Title: Improvements in and relating to rotary valves for internal combustion engines
IPC: F01L7/02
Filed: 1941-06-13
Abstract: 549,857. Valves ; lubricating. MACKENZIE, D. June 13, 1941. No. 7476. [Classes 7 (ii) and 7 (vi)] A rotary conical valve 40 is formed with an axial exhaust passage 51 surrounded by an annular induction passage 50, and is pressed into a seating-bush 34 by a spring 73. The valve housing is made in two halves, 8, 9, the lower part 9 carrying the combustion chambers 17 ..20. The mixture from the carburetter is admitted by a connection 37 leading to the passage 50, and the exhaust pipe 61 is attached at the larger end of the valve. Lubricating-oil is supplied at 77, Fig. 4, to a passage 78 in the seating-bush 34, and thence through holes to grooves 79 on the inside of the bush, the oil passing away by a passage 80 and pipe 81.
Patent GB-241449-A (GB)
Title: Improvements in and relating to embossing presses
IPC: B31F1/07
Filed: 1924-07-10
Abstract: 241,449. Brecknell, W. H. July 10, 1924. Embossing.-In pressure-receiving platens for embossing-presses of the type comprising a platen 1 slidably arranged on inclined surfaces 2 on a support 3 and held in position by an adjusting- screw 4 mounted on the support, the platen is removably secured by a T-headed bolt adapted to pass through and be set across a slot in the fixed part of the press. As shown, the screw 4 is hollow and a bolt 7, having a T-head 8, is carried within it. The T-head 8 passes through a slot 9 in a plate 10 secured to or integral with the support 3, a shoulder 11 on the bolt engaging the outer face of the plate 10. The screw 4 engages a screw-threaded block 6 on the platen and is rotated by a hand wheel 5. A handle 12 is provided for turning the bolt 7.
Patent GB-399405-A (GB)
Title: Process for the decomposition of gas mixtures with low evaporation point
IPC: F25J3/04
Filed: 1933-03-11
Abstract: 399,405. Separating gases by liquefaction. MAPAG MASCHINENFABRIK AUGSBURG-PLATTLING AKT.-GES., and FRANKL, M., 234, Ulmerstrasse, Augsburg, Germany. March 11, 1933, No. 7487. [Class 8 (ii).] Oxygen &c. is evaporated in a rectifier in the separation of air &c. bv the heat of an unliquefied part of the gas mixture, cooled in an expansion engine or otherwise. Air at 4 atm. pressure is cooled by ammonia &c. in a cooler b to -45‹ C., further cooled in a coil c by outflowing nitrogen, expanded in a motor h to slightly above atmosphere pressure and passed into the evaporator f of a rectification column, issuing at the point k into the rectifier and mixing with the wash liquid. High pressure air is cooled and liquefied in coils a, d and delivered as wash liquid to the rectifier. If the oxygen is evaporated by high pressure air, the motor may be omitted, the air for evaporation being cooled to -120‹ C. by the nitrogen. If the oxygen is withdrawn as liquid, the air may be cooled to -80‹ C. by the outflowing oxygen, the motor being omitted.
Patent GB-272989-A (GB)
Title: Improvements in or relating to road surface markings for the control and guidance oftraffic
IPC: E01F9/06
Filed: 1926-03-19
Abstract: 272,989. Crowter, G. E. March 19, 1926. Surface markings.-A disc e, adapted to be embedded in a road surface to provide marks or signs for traffic guidance, is cast, spun, or pressed from aluminium or other metal, and has a depending flange f which is undercut or outwardly flared to key with the road material. The disc mav be hollow and strengthened by internal ribs and the flanges may be formed with ribs g or corrugations to assist the keying. The upper surface may be slightly domed to conform with the camber of the road.
Patent GB-309025-A (GB)
Title: Improvements in devices for measuring the electrical conductivity and concentration of acid or salt solutions
IPC: G01N27/04
Filed: 1929-03-08
Abstract: 309,025. Ateliers J. Carpentier. April 3, 1928, [Convention date]. Resistances. measuring.-A Wheatstone bridge for measuring the conductivity, and hence the concentration, of a liquid has one coil 2<1> of a twocoil moving-coil galvanometer included in one arm 4. The second coil 2, mounted on the opposite side of the spindle and in the same plane as the coil 2<1>. as described in Specification 5961/11, is connected across the corners of the bridge. The outer sides of the coils 2, 2<1> move in the variable air-gap of a permanent magnet or in the air-gap of a variable field electromagnet excited by alternating current. The arms 5, 6 of the bridge comprise fixed resistances, and the arm 4 comprises a resistance which may be regulated for temperature correction, either by a rheostat having a control arm moving over a scale graduated in degrees of temperature, or the resistance may vary with temperatures and be immersed in the liquid under test. The fourth arrm of the bridge comprises electrodes 1, 1<1> immersed in the liquid under test. The scale of the galvanometer may be calibrated in berms of conductivity, or in salinometrical degrees, or in degrees of acidity. One or more contact systems may be provided for distant indication or for control of the degree of concentration. A multi-position switch may be provided by means of which the same apparatus may be employed for measuring the conductivities of liquids in different receptacles.
Patent GB-451214-A (GB)
Title: Interconvertible tables and other articles of furniture
IPC: A47B85/04
Filed: 1936-03-13
Abstract: 451,214. Convertible furniture. RANKIN, A. G., 28, Hart Street, Bloomsbury, London. March 13, 1936, No. 7645. Addition to 438,034. [Class 52 (iii)] In a modification of the arrangement described in the parent Specification, the back wall of the carcase of the convertible table is formed of the back l of the settee, the table top part i being connected to the seat b of the settee through links. r and through the arms k by which it is pivoted to the carcase side walls a, in such a way that when the table top part i is turned about its pivots to its out of use position, the settee seat b and back l are moved into position for use. The back l is slidably and pivotally mounted by its grooves t on pivots s fixed to the walls a.
Patent GB-268757-A (GB)
Title: Improvements in optical apparatus for examining cavities and tubes in the body
IPC: A61B1/307
Filed: 1927-03-21
Abstract: 268,757. Wolf Ges., G. March 30, 1926, [Convention date]. Optical instruments ; appliances for illuminating cavities.-In cystoscopes, gastroscopes and like appliances for examining bodily cavities the cement layers, e.g. Canada balsam, between the components of the lenses a, b are dyed to constitute light filters.
Patent GB-199134-A (GB)
Title: Improvements relating to the lubrication of internal combustion engines
IPC: F01M9/12
Filed: 1922-03-16
Abstract: 199,134. Frost, S. J. March 16, 1922. Funnels.-A funnel for supplying lubricant to the crank casing of an internal combustion-engine is provided with a cavity therein which is connected to some part which is ordinarily inaccessible, such as the commutator or contact-breaker of the ignition system, so that the part is lubricated whenever lubricant is supplied to the crank casing. As supplied to the engine of a Ford motor-vehicle, the funnel a is mounted in the usual socket b<1> through which oil is supplied to the crank casing, and is secured in position by an arm c held between the manifold k<2> and its. bridge-piece k. A cavity g is formed in the funnel by an inclined partition g. A flexible metallic pipe i is held upon a tube h leading from the cavity by a spring arm a<3> having a V- shaped end engaging between the spiral turns of the pipe. The other end of the pipe i carries a fitting h<2> which is applied over the central part of the commutator f so that a part h<4> enters the hole provided in the commutator for the entry of lubricant. The fitting h<2> and the commutator are held in position by a spring arm e carried by the socket b<1>. The funnel is provided with a gauze strainer a<2> and a hinged cover j.
Patent GB-269504-A (GB)
Title: Improvements in the process for the direct production of homogeneous rubber goods from rubber dispersions by electrical means
IPC: C25D1/18
Filed: 1927-03-21
Abstract: 269,504. Anode Rubber Co., Ltd. April 15, 1926, [Convention date]. Latex, treating.-Porous moulds used in the electrophoretic deposition of rubber &c. from latex, are heated, preferably after each time of using, to reverse changes they have undergone during the deposition. Refractory moulds may be heated to remove organic colloids which have penetrated the pores, or the moulds may be placed in a colloid-free electrolyte, and a current passed through them in an opposite direction to that used during the deposition, or the moulds may be rinsed under pressure with an alkaline solution, for example, ammonia, or the electrolyte with which the mould is impregnated, the solution being caused to flow from the side facing the anode in use. The Specification as open to inspection under Sect. 91 (3) (a) describes also the use of substances yielding ions promoting coagulation of rubber, such as compounds of calcium or magnesium, for the impregnation of inert moulds. This subject-matter does not appear in the Specifications as accepted.
Patent GB-604760-A (GB)
Title: Improvements in or relating to the manufacture of anhydrous aliphatic carboxylic acids from aqueous solutions thereof
IPC: C07C51/46
Filed: 1945-03-27
Abstract: Anhydrous aliphatic carboxylic acids are obtained from their aqueous solutions by extraction with tetrahydrofurane or its alkyl derivatives such as 2-methyl-2 : 2-dimethyl-2 : 2 : 5 : 5-tetramethyl- or 2 : 2-diethyltetrahydrofurane.  These compounds act as entrainers of the residual water during the subsequent azeotropic distillation.  Auxiliary entrainers may also be added such as are described in Specification 587,269.  Mono- or polycarboxylic acids including substituted derivatives, such as cyanacetic acid, lactic acid, oxalic acid and citric acid are specified.  In the examples: (1) aqueous acetic or formic acid is extracted with 2-methyl tetrahydrofurane and the extract subjected to azeotropic distillation to give the anhydrous acids; (2) aqueous cyanacetic acid is extracted with 2 : 2 : 5 : 5-tetramethyl tetrahydrofurane and dehydrated in a similar manner; (3) a fermentation mixture of aqueous acetic and butyric acids is extracted with 2 : 2-dimethyl-tetrahydrofurane and the extract distilled.  Benzene, toluene or other hydrocarbons may be added to the tetrahydrofurane to reduce the solubility in water.ALSO:Anhydrous aliphatic carboxylic acids are obtained from their aqueous solutions by extraction with tetrahydrofurane or its alkyl derivatives such as 2-methyl-, 2 : 2-dimethyl-, 2 : 2 : 5 : 5-tetramethyl- or 2 : 2-diethyl-tetrahydrofurane.  These compounds act as entrainers of the residual water during the subsequent azeotropic distillation.  Auxiliary entrainers may also be added such as are described in Specification 587,269. Mono- or polycarboxylic acids including substituted derivatives, such as cyanacetic acid, lactic acid, oxalic acid and citric acid are specified.  In the examples: (1) aqueous acetic or formic acid is extracted with 2-methyl tetrahydrofurane and the extract subjected to azeotropic distillation to give the anhydrous acids; (2) aqueous cyanacetic acid is extracted with 2 : 2 : 5 : 5-tetramethyl-tetrahydrofurane and dehydrated in a similar manner; (3) fermentation mixture of aqueous acetic and butyric acids is extracted with 2 : 2-dimethyl-tetrahydrofurane and the extract distilled.  Benzene, toluene or other hydrocarbons may be added to the tetrahydrofurane to reduce the solubility in water.
Patent GB-116884-A (GB)
Title: Improvements in or relating to Collars for PersonalWear.
Inventor: HEUSEN JOHN MANNING VAN
IPC: A41B3/00
Filed: 1918-05-10
Abstract: 116,884. Heusen, J. M. van. June 16, 1917, [Convention date]. Collars.-In soft double collars stamped out of multi-ply fabric and preferably having a weakened fold portion, the cut edges are turned up and overlaid with a narrow tape 3 which is secured by one line of stitches x passing through the tape and the turned-up edge, and by another line y passing through the tape beyond the turned-up edge. The tape may be attached by a two-needle sewing machine fitted with a tape guide. Specification 116,090 is referred to.